Viessmann VITOCROSSAL 300 CU3A 35 Operating Instructions Manual page 20
Floor mounted, gas-fired condensing boiler with matrix gas burner and lambda pro control, for operation with natural gas and liquid propane gas, heating input 19 to 199 mbh, 5.6 to 58 kw, with vitotronic 200 kw6b controls
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Also See for VITOCROSSAL 300 CU3A 35:
- Technical data manual (33 pages) ,
- Service instructions manual (116 pages) ,
- Installation instructions manual (60 pages)
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Start-up/Shutdown
Starting the Heating System
Vitotronic 200, type KW6B
Legend
A Fault indicator (red)
B On indicator (green)
C Reset button
D ON/OFF switch
Shutting Down the Heating System
With frost protection monitoring
For every heating circuit, select heating program "Standby
mode".
H No central heating.
H No DHW heating.
H Frost protection for the boiler and the DHW tank
is enabled.
For the primary heating circuit (displayed in the header)
Standard menu
1.
for the operating program
For all heating circuits
Extended menu
1.
2. "Heating"
3. Poss.
for the required heating circuit.
4. "Operating program"
5. "Standby mode"
Pump exercise function
Circulation pumps are started for 10 sec. once every 24
hours to prevent the pumps from seizing up. This function
is active during all operating programs and during warm
weather shutdown.
Ending the heating program "Standby mode"
Select another heating program.
20
OK
to confirm
Vitocrossal 300 CU3A 26 to 199 Operating
Ask your heating contractor about the following:
H Boiler type and relevant control unit type
H Required system pressure
H Location of the pressure gauge, shut-off valve, gas
shut-off valve, ventilation apertures
1. Check the heating system pressure at the pressure
gauge. If the pressure of the heating system is too low,
top up the water or notify your heating contractor.
2. In boilers for room air dependant operation:
Check that the ventilation apertures of the mechanical
room are open and unrestricted.
3. Open the gas shut-off valve(s).
4. Switch ON the power supply, e.g. at a separate
MCB/fuse or a mains isolator.
5. Switch ON the ON/OFF switch
After a short time, the standard menu is displayed
(refer to page 14) and the green ON indicator illuminates.
Your heating system and, if installed, your remote control
unit are now ready for use.
Without frost protection monitoring
1. Switch the ON/OFF switch OFF.
2. Close the shut-off valves.
3. Isolate the heating system from its main power
supply, e.g. at a separate MCB/fuse or a mains
isolator.
4. Where outside temperatures of below 37°F (3°C)
are anticipated, please take suitable measures to
protect the heating system against frost. If necessary,
contact your heating contractor.
Information on an extended shutdown
H Circulation pumps may seize up if they are not supplied
with power.
H After an extended shutdown, it may be necessary to
reset the date and time (refer to page 30).
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